Digital print for commission - multiply layers

Dudes - creating an image for a private party. Deliverable going to be for digital print. While prepping for my own work, I use 'multiply' to evoke the trans inks that I use. I want to be able to keep you'd on for my layers (or flatten as a tiff for client). Is this possible? I will most likely not see the digital print. suggestions as how to save the file, keeping trans layers, etc totally appreciated!